sucker rod couplings, API spec 11b, oilfield equipment

Made in accordance with API SPEC 11B, the couplings are high in quality and reasonable in price.
API 3/4” x 7/8” Class SM Full Size Sub Sucker Rod Coupling
1)Material:AISI 5140
2)Standard: API Spec 11B
3)Specification:
O.D.: 1-13/16”(46.04mm)
Length: 4.5”(114.3mm)
Weight: 0.92kg
4)Other Size: 5/8” x 3/4”; 7/8” x 1”;1” x 1-1/8"
5)Features: It is used to connect different sizes of Sucker Rods or to connect the Polished Rod to Sucker Rod string.

API 3/4” x 7/8” Class SM Slim Hole Sub Sucker Rod Coupling
1)Material:AISI 5140
2)Standard: API Spec 11B
3)Specification:
O.D.: 1-5/8”(41.3mm)
Length: 4.5”(114.3mm)
Weight: 0.61kg
4)Other Size: 5/8” x 3/4”; 7/8” x 1”;1” x 1-1/8"
5)Features: It is used to connect different sizes of Sucker Rods or to connect the Polished Rod to Sucker Rod string.

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